<template>
  <div id="root">
    <div class="todo-container">
      <div class="todo-wrap">
        <!-- 头部 -->
        <Header :addTodo="addTodo"/>
        <!-- 列表区域 -->
        <List :todos="todos" :deleteTodo="deleteTodo" :checkTodo="checkTodo"/>
        <!-- 底部 -->
        <Footer />
      </div>
    </div>
  </div>
</template>

<script>
import Header from './components/Header.vue'
import List from './components/List.vue'
import Footer from './components/Footer.vue'

export default {
  name: 'App',
  components: { Header, List, Footer },
  data() {
    return {
      todos: [
        { id: 'askdf6afs01', todoName: '吃饭', isDone: true },
        { id: 'askdf6afs02', todoName: '睡觉', isDone: false },
        { id: 'askdf6afs03', todoName: '学习', isDone: true },
        { id: 'askdf6afs04', todoName: '玩游戏', isDone: false },
        { id: 'askdf6afs05', todoName: '打台球', isDone: true }
      ]
    }
  },
  methods: {
    // 用于向todos数组中添加一个todo对象
    addTodo(todo){
      this.todos.unshift(todo)
    },
    // 用于从todos数组中删除一个todo对象（根据id删）
    deleteTodo(id){
      this.todos = this.todos.filter((item)=>{
        return item.id !== id
      })
    },
    // 用于勾选某个todo对象（根据id勾，逻辑：取反）
    checkTodo(id){
      this.todos.forEach((item)=>{
        if(item.id === id){
          item.isDone = !item.isDone
        }
      })
    }
  },
}
</script>

<style>
/*base*/
body {
  background: #fff;
}

.btn {
  display: inline-block;
  padding: 4px 12px;
  margin-bottom: 0;
  font-size: 14px;
  line-height: 20px;
  text-align: center;
  vertical-align: middle;
  cursor: pointer;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.2), 0 1px 2px rgba(0, 0, 0, 0.05);
  border-radius: 4px;
}

.btn-danger {
  color: #fff;
  background-color: #da4f49;
  border: 1px solid #bd362f;
}

.btn-danger:hover {
  color: #fff;
  background-color: #bd362f;
}

.btn:focus {
  outline: none;
}

.todo-container {
  width: 600px;
  margin: 0 auto;
}

.todo-container .todo-wrap {
  padding: 10px;
  border: 1px solid #ddd;
  border-radius: 5px;
}</style>